Sheet-metal radiator.



PATENTED JULY 18, 1905.

W. R. KINNBAR.

L T E E H a F T B B H B 2 R m mm Mm R MA RT m L H TD.- M m Hm n HP SA PATENTED JULY 18; 1905.

W. R. KINNEAR. SHEET METAL RADIATOR.

APPLICATION FILED JAN. 20, 1903.

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MW W ZZZZ OIWZE @52272607 UNITED STATES WILLIAM R. KINNEAR,

Patented July 18, 1905,

OF COLUMBUS, OHIO.

SHEET-METAL RADIATOR.

SPECIFICATION forming part of Letters Patent No. 794,805, dated July 18, 1905.

Application filed January 20, 1903. Serial No. 139,771.

To M whom, it nzay concern.-

Be it known that I, WILLIAM R. KINNEAR, a citizen of the United States, residing at C0- lumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Sheet-Metal Radiators, of which the following is a specification.

This invention relates to radiators, and more particularly to that type of sheet-metal radiators in which the heating-chamber is of a zigzag or serpentine form, providing airheating spaces between the folds.

The object of my invention is to provide means for maintaining the folds at a definite distance apart.

In the drawings, Figure 1 is a front elevation of one embodiment of my radiator. Fig. 2 is a side elevation. Fig. 3 is a vertical section of a portion of one of the folds. Fig. 4 is a top plan view of the embodiment shown in Figs. 1 and 2, and Fig. 5 is a top plan view of another embodiment of my radiator.

The body of the radiator is preferably formed from two sheets of metal 1 and 2 united at their four edges by seams 4, spaced apart between their edges to form the chamber for the heating medium and bent into a serpentine or zigzag shape to provide folds A, bends B C, and air-spaces D. This structure is materially stiffened against longitudinal compression by introducing between the folds suitable spacing members or balls or spheres 7, which rest in channels 8, (see Figs.

8, 4, and 5,) struck in opposed faces of the respective folds and tapering from the open end of the air-space toward the closed end, so that the spheres 7 will wedge therein.

The radiator when completed is dipped or immersed in any suitable galvanizing soldering, coppering, or other bath, or otherwise coated with metal to finish the surface, seal the joints, and permanently fix the spacing members in place.

9 indicates the pipe through which the heating medium is conducted to the radiator.

In Fig. 5 the folds A are formed by large and small rectangular bends B C.

Having thus described the invention, the following is what is claimed as new therein:

1. A sheet-metal radiator comprising a series of zigzag or serpentine folds with intervening air-spaces, channels being formed in the opposite faces of adjacent folds, and spacing-balls in said channels. I

2. A sheet-metal radiator comprising a series of zigzag or serpentine folds with intervening air-spaces, channels of tapering depth being formed in the opposed faces of adjacent folds, and spacing-balls in said channels.

The foregoing specification signed this th day of January, 1903.

WILLIAM R. KINNEAR. 

